Method for mixing liquids and liquid mixing apparatus

Abstract

According to the method of an aspect of the present invention, by forming the laminated body of the liquids by laminating a plurality of liquids after discharging the plurality of liquids from a central portion of the rotational stage onto the rotational stage and rotating the rotational stage after the formation, the centrifugal force by the rotation enables the laminated body to form a thin layer. Accordingly, because the diffusion between the layers can be executed rapidly in the latter mixing process, a mixing of liquids is allowed to advance immediately.

1. A method for mixing liquids comprising:
 a laminated body formation process for forming a laminated body by laminating a plurality of liquids after discharging the plurality of liquids from a central portion of a rotational stage onto the rotational stage; 
 a layer thinning process for allowing the laminated body to form a thin layer by spreading the laminated body from the central portion to an outer peripheral portion side with a centrifugal force induced by a rotation of the rotational stage; and 
 a mixing process for allowing the laminated body which was allowed to form a thin layer to mix each other by diffusing it between the layers. 
 
     
     
       2. The method for mixing liquids according to  claim 1 , wherein the layer thinning process is controlled by controlling a rotation rate of the rotational stage. 
     
     
       3. A liquid mixing apparatus comprising:
 a rotational stage; and 
 a flow passage through which at least two kinds of liquid pass in a vertical direction upwardly, wherein 
 the flow passage is disposed perpendicularly with respect the rotational stage, 
 an outlet of the flow passage is disposed at the center of the rotational stage, and 
 the flow passage has a concentric multilayered cylindrical structure, wherein 
 the inner diameter of the outermost layer in the flow passage is not smaller than 3 mm, and the inner diameter of the innermost layer in the flow passage is not smaller than 1 mm. 
 
     
     
       4. The liquid mixing apparatus according to  claim 3 , wherein the flow passage has a laminar multilayered cylindrical structure of two layers or not less than three layers. 
     
     
       5. The liquid mixing apparatus according to  claim 3 , wherein
 the number of revolutions of the rotational stage is not less than 500 rpm but not more than 6,000 rpm. 
 
     
     
       6. The liquid mixing apparatus according to  claim 4 , wherein
 the number of revolutions of the rotational stage is not less than 500 rpm but not more than 6,000 rpm. 
 
     
     
       7. The liquid mixing apparatus according to  claim 3 , wherein
 a contact angle between a liquid passing through the external layer of the flow passage and the rotational stage is not wider than 90 degrees. 
 
     
     
       8. The liquid mixing apparatus according to  claim 6 , wherein
 a contact angle between a liquid passing through the external layer of the flow passage and the rotational stage is not wider than 90 degrees. 
 
     
     
       9. The liquid mixing apparatus according to  claim 3 , wherein fine particles are formed by allowing the liquids to mix and react each other. 
     
     
       10. The liquid mixing apparatus according to  claim 8 , wherein fine particles are formed by allowing the liquids to mix and react each other.